I'm afraid that you regard the size as Euro Size and US Size.please do not follow system size chart !!!
if you want make a very correct choice you should choose by the size chart at the Second image !!!

>available:S，M，L，XL，XXL，3XL
SIZE Shoulder Chest Length Sleeve
S 45 102 65 61.5
M 46 106 67 63
L 47 110 69 64.5
XL 49 114 71 66
XXL 50 118 73 67.5
3XL 51 122 75 69

Size Attention:

The item we sell are in Asian size ， usually 1-2 size smaller than Euro size!!!
so we suggest if you want make a correct choice you should choose by size chart!